<?php
/*
 * http.php
 *
 * @(#) $Header: /home/mlemos/cvsroot/http/http.php,v 1.79 2009/09/03 00:09:37 mlemos Exp $
 *
 */

class httpRequestIt
{
    var $host_name="";
    var $host_port=0;
    var $proxy_host_name="";
    var $proxy_host_port=80;
    var $socks_host_name = '';
    var $socks_host_port = 1080;
    var $socks_version = '5';

    var $protocol="http";
    var $request_method="GET";
    var $user_agent='httpclient (http://www.phpclasses.org/httpclient $Revision: 1.79 $)';
    var $authentication_mechanism="";
    var $user;
    var $password;
    var $realm;
    var $workstation;
    var $proxy_authentication_mechanism="";
    var $proxy_user;
    var $proxy_password;
    var $proxy_realm;
    var $proxy_workstation;
    var $request_uri="";
    var $request="";
    var $request_headers=array();
    var $request_user;
    var $request_password;
    var $request_realm;
    var $request_workstation;
    var $proxy_request_user;
    var $proxy_request_password;
    var $proxy_request_realm;
    var $proxy_request_workstation;
    var $request_body="";
    var $request_arguments=array();
    var $protocol_version="1.1";
    var $timeout=0;
    var $data_timeout=0;
    var $debug=0;
    var $debug_response_body=1;
    var $html_debug=0;
    var $support_cookies=1;
    var $cookies=array();
    var $error="";
    var $exclude_address="";
    var $follow_redirect=0;
    var $redirection_limit=5;
    var $response_status="";
    var $response_message="";
    var $file_buffer_length=8000;
    var $force_multipart_form_post=0;
    var $prefer_curl = 0;

    /* private variables - DO NOT ACCESS */

    var $state="Disconnected";
    var $use_curl=0;
    var $connection=0;
    var $content_length=0;
    var $response="";
    var $read_response=0;
    var $read_length=0;
    var $request_host="";
    var $next_token="";
    var $redirection_level=0;
    var $chunked=0;
    var $remaining_chunk=0;
    var $last_chunk_read=0;
    var $months=array(
		"Jan"=>"01",
		"Feb"=>"02",
		"Mar"=>"03",
		"Apr"=>"04",
		"May"=>"05",
		"Jun"=>"06",
		"Jul"=>"07",
		"Aug"=>"08",
		"Sep"=>"09",
		"Oct"=>"10",
		"Nov"=>"11",
		"Dec"=>"12");
    var $session='';
    var $connection_close=0;

    /* Private methods - DO NOT CALL */

    Function Tokenize($string,$separator="")
    {
        if(!strcmp($separator,""))
        {
            $separator=$string;
            $string=$this->next_token;
        }
        for($character=0;$character<strlen($separator);$character++)
        {
            if(GetType($position=strpos($string,$separator[$character]))=="integer")
            $found=(IsSet($found) ? min($found,$position) : $position);
        }
        if(IsSet($found))
        {
            $this->next_token=substr($string,$found+1);
            return(substr($string,0,$found));
        }
        else
        {
            $this->next_token="";
            return($string);
        }
    }

    Function CookieEncode($value, $name)
    {
        return($name ? str_replace("=", "%25", $value) : str_replace(";", "%3B", $value));
    }

    Function SetError($error)
    {
        return($this->error=$error);
    }

    Function SetPHPError($error, &$php_error_message)
    {
        if(IsSet($php_error_message)
        && strlen($php_error_message))
        $error.=": ".$php_error_message;
        return($this->SetError($error));
    }

    Function SetDataAccessError($error,$check_connection=0)
    {
        $this->error=$error;
        if(!$this->use_curl
        && function_exists("socket_get_status"))
        {
            $status=socket_get_status($this->connection);
            if($status["timed_out"])
            $this->error.=": data access time out";
            elseif($status["eof"])
            {
                if($check_connection)
                $this->error="";
                else
                $this->error.=": the server disconnected";
            }
        }
    }

    Function OutputDebug($message)
    {
        $message.="\n";
        if($this->html_debug)
        $message=str_replace("\n","<br />\n",HtmlEntities($message));
        echo $message;
        flush();
    }

    Function GetLine()
    {
        for($line="";;)
        {
            if($this->use_curl)
            {
                $eol=strpos($this->response,"\n",$this->read_response);
                $data=($eol ? substr($this->response,$this->read_response,$eol+1-$this->read_response) : "");
                $this->read_response+=strlen($data);
            }
            else
            {
                if(feof($this->connection))
                {
                    $this->SetDataAccessError("reached the end of data while reading from the HTTP server connection");
                    return(0);
                }
                $data=fgets($this->connection,100);
            }
            if(GetType($data)!="string"
            || strlen($data)==0)
            {
                $this->SetDataAccessError("it was not possible to read line from the HTTP server");
                return(0);
            }
            $line.=$data;
            $length=strlen($line);
            if($length
            && !strcmp(substr($line,$length-1,1),"\n"))
            {
                $length-=(($length>=2 && !strcmp(substr($line,$length-2,1),"\r")) ? 2 : 1);
                $line=substr($line,0,$length);
                if($this->debug)
                $this->OutputDebug("S $line");
                return($line);
            }
        }
    }

    Function PutLine($line)
    {
        if($this->debug)
        $this->OutputDebug("C $line");
        if(!fputs($this->connection,$line."\r\n"))
        {
            $this->SetDataAccessError("it was not possible to send a line to the HTTP server");
            return(0);
        }
        return(1);
    }

    Function PutData($data)
    {
        if(strlen($data))
        {
            if($this->debug)
            $this->OutputDebug('C '.$data);
            if(!fputs($this->connection,$data))
            {
                $this->SetDataAccessError("it was not possible to send data to the HTTP server");
                return(0);
            }
        }
        return(1);
    }

    Function FlushData()
    {
        if(!fflush($this->connection))
        {
            $this->SetDataAccessError("it was not possible to send data to the HTTP server");
            return(0);
        }
        return(1);
    }

    Function ReadChunkSize()
    {
        if($this->remaining_chunk==0)
        {
            $debug=$this->debug;
            if(!$this->debug_response_body)
            $this->debug=0;
            $line=$this->GetLine();
            $this->debug=$debug;
            if(GetType($line)!="string")
            return($this->SetError("4 could not read chunk start: ".$this->error));
            $this->remaining_chunk=hexdec($line);
        }
        return("");
    }

    Function ReadBytes($length)
    {
        if($this->use_curl)
        {
            $bytes=substr($this->response,$this->read_response,min($length,strlen($this->response)-$this->read_response));
            $this->read_response+=strlen($bytes);
            if($this->debug
            && $this->debug_response_body
            && strlen($bytes))
            $this->OutputDebug("S ".$bytes);
        }
        else
        {
            if($this->chunked)
            {
                for($bytes="",$remaining=$length;$remaining;)
                {
                    if(strlen($this->ReadChunkSize()))
                    return("");
                    if($this->remaining_chunk==0)
                    {
                        $this->last_chunk_read=1;
                        break;
                    }
                    $ask=min($this->remaining_chunk,$remaining);
                    $chunk=@fread($this->connection,$ask);
                    $read=strlen($chunk);
                    if($read==0)
                    {
                        $this->SetDataAccessError("it was not possible to read data chunk from the HTTP server");
                        return("");
                    }
                    if($this->debug
                    && $this->debug_response_body)
                    $this->OutputDebug("S ".$chunk);
                    $bytes.=$chunk;
                    $this->remaining_chunk-=$read;
                    $remaining-=$read;
                    if($this->remaining_chunk==0)
                    {
                        if(feof($this->connection))
                        return($this->SetError("reached the end of data while reading the end of data chunk mark from the HTTP server"));
                        $data=@fread($this->connection,2);
                        if(strcmp($data,"\r\n"))
                        {
                            $this->SetDataAccessError("it was not possible to read end of data chunk from the HTTP server");
                            return("");
                        }
                    }
                }
            }
            else
            {
                $bytes=@fread($this->connection,$length);
                if(strlen($bytes))
                {
                    if($this->debug
                    && $this->debug_response_body)
                    $this->OutputDebug("S ".$bytes);
                }
                else
                $this->SetDataAccessError("it was not possible to read data from the HTTP server", $this->connection_close);
            }
        }
        return($bytes);
    }

    Function EndOfInput()
    {
        if($this->use_curl)
        return($this->read_response>=strlen($this->response));
        if($this->chunked)
        return($this->last_chunk_read);
        return(feof($this->connection));
    }

    Function Resolve($domain, &$ip, $server_type)
    {
        if(preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/',$domain))
        $ip=$domain;
        else
        {
            if($this->debug)
            $this->OutputDebug('Resolving '.$server_type.' server domain "'.$domain.'"...');
            if(!strcmp($ip=@gethostbyname($domain),$domain))
            $ip="";
        }
        if(strlen($ip)==0
        || (strlen($this->exclude_address)
        && !strcmp(@gethostbyname($this->exclude_address),$ip)))
        return($this->SetError("could not resolve the host domain \"".$domain."\""));
        return('');
    }

    Function Connect($host_name, $host_port, $ssl, $server_type = 'HTTP')
    {
        $domain=$host_name;
        $port = $host_port;
        if(strlen($error = $this->Resolve($domain, $ip, $server_type)))
        return($error);
        if(strlen($this->socks_host_name))
        {
            switch($this->socks_version)
            {
                case '4':
                    $version = 4;
                    break;
                case '5':
                    $version = 5;
                    break;
                default:
                    return('it was not specified a supported SOCKS protocol version');
                    break;
            }
            $host_ip = $ip;
            $port = $this->socks_host_port;
            $host_server_type = $server_type;
            $server_type = 'SOCKS';
            if(strlen($error = $this->Resolve($this->socks_host_name, $ip, $server_type)))
            return($error);
        }
        if($this->debug)
        $this->OutputDebug('Connecting to '.$server_type.' server IP '.$ip.' port '.$port.'...');
        if($ssl)
        $ip="ssl://".$ip;
        if(($this->connection=($this->timeout ? @fsockopen($ip, $port, $errno, $error, $this->timeout) : @fsockopen($ip, $port, $errno)))==0)
        {
            switch($errno)
            {
                case -3:
                    return($this->SetError("-3 socket could not be created"));
                case -4:
                    return($this->SetError("-4 dns lookup on hostname \"".$host_name."\" failed"));
                case -5:
                    return($this->SetError("-5 connection refused or timed out"));
                case -6:
                    return($this->SetError("-6 fdopen() call failed"));
                case -7:
                    return($this->SetError("-7 setvbuf() call failed"));
                default:
                    return($this->SetPHPError($errno." could not connect to the host \"".$host_name."\"",$php_errormsg));
            }
        }
        else
        {
            if($this->data_timeout
            && function_exists("socket_set_timeout"))
            socket_set_timeout($this->connection,$this->data_timeout,0);
            if(strlen($this->socks_host_name))
            {
                if($this->debug)
                $this->OutputDebug('Connected to the SOCKS server '.$this->socks_host_name);
                $send_error = 'it was not possible to send data to the SOCKS server';
                $receive_error = 'it was not possible to receive data from the SOCKS server';
                switch($version)
                {
                    case 4:
                        $command = 1;
                        if(!fputs($this->connection, chr($version).chr($command).pack('nN', $host_port, ip2long($host_ip)).$this->user.Chr(0)))
                        $error = $this->SetDataAccessError($send_error);
                        else
                        {
                            $response = fgets($this->connection, 9);
                            if(strlen($response) != 8)
                            $error = $this->SetDataAccessError($receive_error);
                            else
                            {
                                $socks_errors = array(
									"\x5a"=>'',
									"\x5b"=>'request rejected',
									"\x5c"=>'request failed because client is not running identd (or not reachable from the server)',
									"\x5d"=>'request failed because client\'s identd could not confirm the user ID string in the request',
                                );
                                $error_code = $response[1];
                                $error = (IsSet($socks_errors[$error_code]) ? $socks_errors[$error_code] : 'unknown');
                                if(strlen($error))
                                $error = 'SOCKS error: '.$error;
                            }
                        }
                        break;
                    case 5:
                        if($this->debug)
                        $this->OutputDebug('Negotiating the authentication method ...');
                        $methods = 1;
                        $method = 0;
                        if(!fputs($this->connection, chr($version).chr($methods).chr($method)))
                        $error = $this->SetDataAccessError($send_error);
                        else
                        {
                            $response = fgets($this->connection, 3);
                            if(strlen($response) != 2)
                            $error = $this->SetDataAccessError($receive_error);
                            elseif(Ord($response[1]) != $method)
                            $error = 'the SOCKS server requires an authentication method that is not yet supported';
                            else
                            {
                                if($this->debug)
                                $this->OutputDebug('Connecting to '.$host_server_type.' server IP '.$host_ip.' port '.$host_port.'...');
                                $command = 1;
                                $address_type = 1;
                                if(!fputs($this->connection, chr($version).chr($command)."\x00".chr($address_type).pack('Nn', ip2long($host_ip), $host_port)))
                                $error = $this->SetDataAccessError($send_error);
                                else
                                {
                                    $response = fgets($this->connection, 11);
                                    if(strlen($response) != 10)
                                    $error = $this->SetDataAccessError($receive_error);
                                    else
                                    {
                                        $socks_errors = array(
											"\x00"=>'',
											"\x01"=>'general SOCKS server failure',
											"\x02"=>'connection not allowed by ruleset',
											"\x03"=>'Network unreachable',
											"\x04"=>'Host unreachable',
											"\x05"=>'Connection refused',
											"\x06"=>'TTL expired',
											"\x07"=>'Command not supported',
											"\x08"=>'Address type not supported'
											);
											$error_code = $response[1];
											$error = (IsSet($socks_errors[$error_code]) ? $socks_errors[$error_code] : 'unknown');
											if(strlen($error))
											$error = 'SOCKS error: '.$error;
                                    }
                                }
                            }
                        }
                        break;
                    default:
                        $error = 'support for SOCKS protocol version '.$this->socks_version.' is not yet implemented';
                        break;
                }
                if(strlen($error))
                {
                    fclose($this->connection);
                    return($error);
                }
            }
            if($this->debug)
            $this->OutputDebug("Connected to $host_name");
            if(strlen($this->proxy_host_name)
            && !strcmp(strtolower($this->protocol), 'https'))
            {
                if(function_exists('stream_socket_enable_crypto')
                && in_array('ssl', stream_get_transports()))
                $this->state = "ConnectedToProxy";
                else
                {
                    $this->OutputDebug("It is not possible to start SSL after connecting to the proxy server. If the proxy refuses to forward the SSL request, you may need to upgrade to PHP 5.1 or later with OpenSSL support enabled.");
                    $this->state="Connected";
                }
            }
            else
            $this->state="Connected";
            return("");
        }
    }

    Function Disconnect()
    {
        if($this->debug)
        $this->OutputDebug("Disconnected from ".$this->host_name);
        if($this->use_curl)
        {
            curl_close($this->connection);
            $this->response="";
        }
        else
        fclose($this->connection);
        $this->state="Disconnected";
        return("");
    }

    /* Public methods */

    Function GetRequestArguments($url, &$arguments)
    {
        $this->error = '';
        $arguments=array();
        $url = str_replace(' ', '%20', $url);
        $parameters=@parse_url($url);
        if(!$parameters)
        return($this->SetError("it was not specified a valid URL"));
        if(!IsSet($parameters["scheme"]))
        return($this->SetError("it was not specified the protocol type argument"));
        switch(strtolower($parameters["scheme"]))
        {
            case "http":
            case "https":
                $arguments["Protocol"]=$parameters["scheme"];
                break;
            default:
                return($parameters["scheme"]." connection scheme is not yet supported");
        }
        if(!IsSet($parameters["host"]))
        return($this->SetError("it was not specified the connection host argument"));
        $arguments["HostName"]=$parameters["host"];
        $arguments["Headers"]=array("Host"=>$parameters["host"].(IsSet($parameters["port"]) ? ":".$parameters["port"] : ""));
        if(IsSet($parameters["user"]))
        {
            $arguments["AuthUser"]=UrlDecode($parameters["user"]);
            if(!IsSet($parameters["pass"]))
            $arguments["AuthPassword"]="";
        }
        if(IsSet($parameters["pass"]))
        {
            if(!IsSet($parameters["user"]))
            $arguments["AuthUser"]="";
            $arguments["AuthPassword"]=UrlDecode($parameters["pass"]);
        }
        if(IsSet($parameters["port"]))
        {
            if(strcmp($parameters["port"],strval(intval($parameters["port"]))))
            return($this->SetError("it was not specified a valid connection host argument"));
            $arguments["HostPort"]=intval($parameters["port"]);
        }
        else
        $arguments["HostPort"]=0;
        $arguments["RequestURI"]=(IsSet($parameters["path"]) ? $parameters["path"] : "/").(IsSet($parameters["query"]) ? "?".$parameters["query"] : "");
        if(strlen($this->user_agent))
        $arguments["Headers"]["User-Agent"]=$this->user_agent;
        return("");
    }

    Function Open($arguments)
    {
        if(strlen($this->error))
        return($this->error);
        if($this->state!="Disconnected")
        return("1 already connected");
        if(IsSet($arguments["HostName"]))
        $this->host_name=$arguments["HostName"];
        if(IsSet($arguments["HostPort"]))
        $this->host_port=$arguments["HostPort"];
        if(IsSet($arguments["ProxyHostName"]))
        $this->proxy_host_name=$arguments["ProxyHostName"];
        if(IsSet($arguments["ProxyHostPort"]))
        $this->proxy_host_port=$arguments["ProxyHostPort"];
        if(IsSet($arguments["SOCKSHostName"]))
        $this->socks_host_name=$arguments["SOCKSHostName"];
        if(IsSet($arguments["SOCKSHostPort"]))
        $this->socks_host_port=$arguments["SOCKSHostPort"];
        if(IsSet($arguments["SOCKSVersion"]))
        $this->socks_version=$arguments["SOCKSVersion"];
        if(IsSet($arguments["Protocol"]))
        $this->protocol=$arguments["Protocol"];
        switch(strtolower($this->protocol))
        {
            case "http":
                $default_port=80;
                break;
            case "https":
                $default_port=443;
                break;
            default:
                return($this->SetError("2 it was not specified a valid connection protocol"));
        }
        if(strlen($this->proxy_host_name)==0)
        {
            if(strlen($this->host_name)==0)
            return($this->SetError("2 it was not specified a valid hostname"));
            $host_name=$this->host_name;
            $host_port=($this->host_port ? $this->host_port : $default_port);
            $server_type = 'HTTP';
        }
        else
        {
            $host_name=$this->proxy_host_name;
            $host_port=$this->proxy_host_port;
            $server_type = 'HTTP proxy';
        }
        $ssl=(strtolower($this->protocol)=="https" && strlen($this->proxy_host_name)==0);
        if($ssl
        && strlen($this->socks_host_name))
        return($this->SetError('establishing SSL connections via a SOCKS server is not yet supported'));
        $this->use_curl=($ssl && $this->prefer_curl && function_exists("curl_init"));
        if($this->debug)
        $this->OutputDebug("Connecting to ".$this->host_name);
        if($this->use_curl)
        {
            $error=(($this->connection=curl_init($this->protocol."://".$this->host_name.($host_port==$default_port ? "" : ":".strval($host_port))."/")) ? "" : "Could not initialize a CURL session");
            if(strlen($error)==0)
            {
                if(IsSet($arguments["SSLCertificateFile"]))
                curl_setopt($this->connection,CURLOPT_SSLCERT,$arguments["SSLCertificateFile"]);
                if(IsSet($arguments["SSLCertificatePassword"]))
                curl_setopt($this->connection,CURLOPT_SSLCERTPASSWD,$arguments["SSLCertificatePassword"]);
                if(IsSet($arguments["SSLKeyFile"]))
                curl_setopt($this->connection,CURLOPT_SSLKEY,$arguments["SSLKeyFile"]);
                if(IsSet($arguments["SSLKeyPassword"]))
                curl_setopt($this->connection,CURLOPT_SSLKEYPASSWD,$arguments["SSLKeyPassword"]);
            }
            $this->state="Connected";
        }
        else
        {
            $error="";
            if(strlen($this->proxy_host_name)
            && (IsSet($arguments["SSLCertificateFile"])
            || IsSet($arguments["SSLCertificateFile"])))
            $error="establishing SSL connections using certificates or private keys via non-SSL proxies is not supported";
            else
            {
                if($ssl)
                {
                    if(IsSet($arguments["SSLCertificateFile"]))
                    $error="establishing SSL connections using certificates is only supported when the cURL extension is enabled";
                    elseif(IsSet($arguments["SSLKeyFile"]))
                    $error="establishing SSL connections using a private key is only supported when the cURL extension is enabled";
                    else
                    {
                        $version=explode(".",function_exists("phpversion") ? phpversion() : "3.0.7");
                        $php_version=intval($version[0])*1000000+intval($version[1])*1000+intval($version[2]);
                        if($php_version<4003000)
                        $error="establishing SSL connections requires at least PHP version 4.3.0 or having the cURL extension enabled";
                        elseif(!function_exists("extension_loaded")
                        || !extension_loaded("openssl"))
                        $error="establishing SSL connections requires the OpenSSL extension enabled";
                    }
                }
                if(strlen($error)==0)
                $error=$this->Connect($host_name, $host_port, $ssl, $server_type);
            }
        }
        if(strlen($error))
        return($this->SetError($error));
        $this->session=md5(uniqid(""));
        return("");
    }

    Function Close()
    {
        if($this->state=="Disconnected")
        return("1 already disconnected");
        $error=$this->Disconnect();
        if(strlen($error)==0)
        $this->state="Disconnected";
        return($error);
    }

    Function PickCookies(&$cookies,$secure)
    {
        if(IsSet($this->cookies[$secure]))
        {
            $now=gmdate("Y-m-d H-i-s");
            for($domain=0,Reset($this->cookies[$secure]);$domain<count($this->cookies[$secure]);Next($this->cookies[$secure]),$domain++)
            {
                $domain_pattern=Key($this->cookies[$secure]);
                $match=strlen($this->request_host)-strlen($domain_pattern);
                if($match>=0
                && !strcmp($domain_pattern,substr($this->request_host,$match))
                && ($match==0
                || $domain_pattern[0]=="."
                || $this->request_host[$match-1]=="."))
                {
                    for(Reset($this->cookies[$secure][$domain_pattern]),$path_part=0;$path_part<count($this->cookies[$secure][$domain_pattern]);Next($this->cookies[$secure][$domain_pattern]),$path_part++)
                    {
                        $path=Key($this->cookies[$secure][$domain_pattern]);
                        if(strlen($this->request_uri)>=strlen($path)
                        && substr($this->request_uri,0,strlen($path))==$path)
                        {
                            for(Reset($this->cookies[$secure][$domain_pattern][$path]),$cookie=0;$cookie<count($this->cookies[$secure][$domain_pattern][$path]);Next($this->cookies[$secure][$domain_pattern][$path]),$cookie++)
                            {
                                $cookie_name=Key($this->cookies[$secure][$domain_pattern][$path]);
                                $expires=$this->cookies[$secure][$domain_pattern][$path][$cookie_name]["expires"];
                                if($expires==""
                                || strcmp($now,$expires)<0)
                                $cookies[$cookie_name]=$this->cookies[$secure][$domain_pattern][$path][$cookie_name];
                            }
                        }
                    }
                }
            }
        }
    }

    Function GetFileDefinition($file, &$definition)
    {
        $name="";
        if(IsSet($file["FileName"]))
        $name=basename($file["FileName"]);
        if(IsSet($file["Name"]))
        $name=$file["Name"];
        if(strlen($name)==0)
        return("it was not specified the file part name");
        if(IsSet($file["Content-Type"]))
        {
            $content_type=$file["Content-Type"];
            $type=$this->Tokenize(strtolower($content_type),"/");
            $sub_type=$this->Tokenize("");
            switch($type)
            {
                case "text":
                case "image":
                case "audio":
                case "video":
                case "application":
                case "message":
                    break;
                case "automatic":
                    switch($sub_type)
                    {
                        case "name":
                            switch(GetType($dot=strrpos($name,"."))=="integer" ? strtolower(substr($name,$dot)) : "")
                            {
                                case ".xls":
                                    $content_type="application/excel";
                                    break;
                                case ".hqx":
                                    $content_type="application/macbinhex40";
                                    break;
                                case ".doc":
                                case ".dot":
                                case ".wrd":
                                    $content_type="application/msword";
                                    break;
                                case ".pdf":
                                    $content_type="application/pdf";
                                    break;
                                case ".pgp":
                                    $content_type="application/pgp";
                                    break;
                                case ".ps":
                                case ".eps":
                                case ".ai":
                                    $content_type="application/postscript";
                                    break;
                                case ".ppt":
                                    $content_type="application/powerpoint";
                                    break;
                                case ".rtf":
                                    $content_type="application/rtf";
                                    break;
                                case ".tgz":
                                case ".gtar":
                                    $content_type="application/x-gtar";
                                    break;
                                case ".gz":
                                    $content_type="application/x-gzip";
                                    break;
                                case ".php":
                                case ".php3":
                                    $content_type="application/x-httpd-php";
                                    break;
                                case ".js":
                                    $content_type="application/x-javascript";
                                    break;
                                case ".ppd":
                                case ".psd":
                                    $content_type="application/x-photoshop";
                                    break;
                                case ".swf":
                                case ".swc":
                                case ".rf":
                                    $content_type="application/x-shockwave-flash";
                                    break;
                                case ".tar":
                                    $content_type="application/x-tar";
                                    break;
                                case ".zip":
                                    $content_type="application/zip";
                                    break;
                                case ".mid":
                                case ".midi":
                                case ".kar":
                                    $content_type="audio/midi";
                                    break;
                                case ".mp2":
                                case ".mp3":
                                case ".mpga":
                                    $content_type="audio/mpeg";
                                    break;
                                case ".ra":
                                    $content_type="audio/x-realaudio";
                                    break;
                                case ".wav":
                                    $content_type="audio/wav";
                                    break;
                                case ".bmp":
                                    $content_type="image/bitmap";
                                    break;
                                case ".gif":
                                    $content_type="image/gif";
                                    break;
                                case ".iff":
                                    $content_type="image/iff";
                                    break;
                                case ".jb2":
                                    $content_type="image/jb2";
                                    break;
                                case ".jpg":
                                case ".jpe":
                                case ".jpeg":
                                    $content_type="image/jpeg";
                                    break;
                                case ".jpx":
                                    $content_type="image/jpx";
                                    break;
                                case ".png":
                                    $content_type="image/png";
                                    break;
                                case ".tif":
                                case ".tiff":
                                    $content_type="image/tiff";
                                    break;
                                case ".wbmp":
                                    $content_type="image/vnd.wap.wbmp";
                                    break;
                                case ".xbm":
                                    $content_type="image/xbm";
                                    break;
                                case ".css":
                                    $content_type="text/css";
                                    break;
                                case ".txt":
                                    $content_type="text/plain";
                                    break;
                                case ".htm":
                                case ".html":
                                    $content_type="text/html";
                                    break;
                                case ".xml":
                                    $content_type="text/xml";
                                    break;
                                case ".mpg":
                                case ".mpe":
                                case ".mpeg":
                                    $content_type="video/mpeg";
                                    break;
                                case ".qt":
                                case ".mov":
                                    $content_type="video/quicktime";
                                    break;
                                case ".avi":
                                    $content_type="video/x-ms-video";
                                    break;
                                case ".eml":
                                    $content_type="message/rfc822";
                                    break;
                                default:
                                    $content_type="application/octet-stream";
                                    break;
                            }
                            break;
                        default:
                            return($content_type." is not a supported automatic content type detection method");
                    }
                    break;
                default:
                    return($content_type." is not a supported file content type");
            }
        }
        else
        $content_type="application/octet-stream";
        $definition=array(
			"Content-Type"=>$content_type,
			"NAME"=>$name
        );
        if(IsSet($file["FileName"]))
        {
            if(GetType($length=@filesize($file["FileName"]))!="integer")
            {
                $error="it was not possible to determine the length of the file ".$file["FileName"];
                if(IsSet($php_errormsg)
                && strlen($php_errormsg))
                $error.=": ".$php_errormsg;
                if(!file_exists($file["FileName"]))
                $error="it was not possible to access the file ".$file["FileName"];
                return($error);
            }
            $definition["FILENAME"]=$file["FileName"];
            $definition["Content-Length"]=$length;
        }
        elseif(IsSet($file["Data"]))
        $definition["Content-Length"]=strlen($definition["DATA"]=$file["Data"]);
        else
        return("it was not specified a valid file name");
        return("");
    }

    Function ConnectFromProxy($arguments, &$headers)
    {
        if(!$this->PutLine('CONNECT '.$this->host_name.':'.($this->host_port ? $this->host_port : 443).' HTTP/1.0')
        || (strlen($this->user_agent)
        && !$this->PutLine('User-Agent: '.$this->user_agent))
        || (IsSet($arguments['Headers']['Proxy-Authorization'])
        && !$this->PutLine('Proxy-Authorization: '.$arguments['Headers']['Proxy-Authorization']))
        || !$this->PutLine(''))
        {
            $this->Disconnect();
            return($this->error);
        }
        $this->state = "ConnectSent";
        if(strlen($error=$this->ReadReplyHeadersResponse($headers)))
        return($error);
        $proxy_authorization="";
        while(!strcmp($this->response_status, "100"))
        {
            $this->state="ConnectSent";
            if(strlen($error=$this->ReadReplyHeadersResponse($headers)))
            return($error);
        }
        switch($this->response_status)
        {
            case "200":
                if(!@stream_socket_enable_crypto($this->connection, 1, STREAM_CRYPTO_METHOD_SSLv23_CLIENT))
                {
                    $this->SetPHPError('it was not possible to start a SSL encrypted connection via this proxy', $php_errormsg);
                    $this->Disconnect();
                    return($this->error);
                }
                $this->state = "Connected";
                break;
            case "407":
                if(strlen($error=$this->Authenticate($headers, -1, $proxy_authorization, $this->proxy_request_user, $this->proxy_request_password, $this->proxy_request_realm, $this->proxy_request_workstation)))
                return($error);
                break;
            default:
                return($this->SetError("unable to send request via proxy"));
        }
        return("");
    }

    Function SendRequest($arguments)
    {
        if(strlen($this->error))
        return($this->error);
        if(IsSet($arguments["ProxyUser"]))
        $this->proxy_request_user=$arguments["ProxyUser"];
        elseif(IsSet($this->proxy_user))
        $this->proxy_request_user=$this->proxy_user;
        if(IsSet($arguments["ProxyPassword"]))
        $this->proxy_request_password=$arguments["ProxyPassword"];
        elseif(IsSet($this->proxy_password))
        $this->proxy_request_password=$this->proxy_password;
        if(IsSet($arguments["ProxyRealm"]))
        $this->proxy_request_realm=$arguments["ProxyRealm"];
        elseif(IsSet($this->proxy_realm))
        $this->proxy_request_realm=$this->proxy_realm;
        if(IsSet($arguments["ProxyWorkstation"]))
        $this->proxy_request_workstation=$arguments["ProxyWorkstation"];
        elseif(IsSet($this->proxy_workstation))
        $this->proxy_request_workstation=$this->proxy_workstation;
        switch($this->state)
        {
            case "Disconnected":
                return($this->SetError("1 connection was not yet established"));
            case "Connected":
                $connect = 0;
                break;
            case "ConnectedToProxy":
                if(strlen($error = $this->ConnectFromProxy($arguments, $headers)))
                return($error);
                $connect = 1;
                break;
            default:
                return($this->SetError("2 can not send request in the current connection state"));
        }
        if(IsSet($arguments["RequestMethod"]))
        $this->request_method=$arguments["RequestMethod"];
        if(IsSet($arguments["User-Agent"]))
        $this->user_agent=$arguments["User-Agent"];
        if(!IsSet($arguments["Headers"]["User-Agent"])
        && strlen($this->user_agent))
        $arguments["Headers"]["User-Agent"]=$this->user_agent;
        if(strlen($this->request_method)==0)
        return($this->SetError("3 it was not specified a valid request method"));
        if(IsSet($arguments["RequestURI"]))
        $this->request_uri=$arguments["RequestURI"];
        if(strlen($this->request_uri)==0
        || substr($this->request_uri,0,1)!="/")
        return($this->SetError("4 it was not specified a valid request URI"));
        $this->request_arguments=$arguments;
        $this->request_headers=(IsSet($arguments["Headers"]) ? $arguments["Headers"] : array());
        $body_length=0;
        $this->request_body="";
        $get_body=1;
        if($this->request_method=="POST"
        || $this->request_method=="PUT")
        {
            if(IsSet($arguments['StreamRequest']))
            {
                $get_body = 0;
                $this->request_headers["Transfer-Encoding"]="chunked";
            }
            elseif(IsSet($arguments["PostFiles"])
            || ($this->force_multipart_form_post
            && IsSet($arguments["PostValues"])))
            {
                $boundary="--".md5(uniqid(time()));
                $this->request_headers["Content-Type"]="multipart/form-data; boundary=".$boundary.(IsSet($arguments["CharSet"]) ? "; charset=".$arguments["CharSet"] : "");
                $post_parts=array();
                if(IsSet($arguments["PostValues"]))
                {
                    $values=$arguments["PostValues"];
                    if(GetType($values)!="array")
                    return($this->SetError("5 it was not specified a valid POST method values array"));
                    for(Reset($values),$value=0;$value<count($values);Next($values),$value++)
                    {
                        $input=Key($values);
                        $headers="--".$boundary."\r\nContent-Disposition: form-data; name=\"".$input."\"\r\n\r\n";
                        $data=$values[$input];
                        $post_parts[]=array("HEADERS"=>$headers,"DATA"=>$data);
                        $body_length+=strlen($headers)+strlen($data)+strlen("\r\n");
                    }
                }
                $body_length+=strlen("--".$boundary."--\r\n");
                $files=(IsSet($arguments["PostFiles"]) ? $arguments["PostFiles"] : array());
                Reset($files);
                $end=(GetType($input=Key($files))!="string");
                for(;!$end;)
                {
                    if(strlen($error=$this->GetFileDefinition($files[$input],$definition)))
                    return("3 ".$error);
                    $headers="--".$boundary."\r\nContent-Disposition: form-data; name=\"".$input."\"; filename=\"".$definition["NAME"]."\"\r\nContent-Type: ".$definition["Content-Type"]."\r\n\r\n";
                    $part=count($post_parts);
                    $post_parts[$part]=array("HEADERS"=>$headers);
                    if(IsSet($definition["FILENAME"]))
                    {
                        $post_parts[$part]["FILENAME"]=$definition["FILENAME"];
                        $data="";
                    }
                    else
                    $data=$definition["DATA"];
                    $post_parts[$part]["DATA"]=$data;
                    $body_length+=strlen($headers)+$definition["Content-Length"]+strlen("\r\n");
                    Next($files);
                    $end=(GetType($input=Key($files))!="string");
                }
                $get_body=0;
            }
            elseif(IsSet($arguments["PostValues"]))
            {
                $values=$arguments["PostValues"];
                if(GetType($values)!="array")
                return($this->SetError("5 it was not specified a valid POST method values array"));
                for(Reset($values),$value=0;$value<count($values);Next($values),$value++)
                {
                    $k=Key($values);
                    if(GetType($values[$k])=="array")
                    {
                        for($v = 0; $v < count($values[$k]); $v++)
                        {
                            if($value+$v>0)
                            $this->request_body.="&";
                            $this->request_body.=UrlEncode($k)."=".UrlEncode($values[$k][$v]);
                        }
                    }
                    else
                    {
                        if($value>0)
                        $this->request_body.="&";
                        $this->request_body.=UrlEncode($k)."=".UrlEncode($values[$k]);
                    }
                }
                $this->request_headers["Content-Type"]="application/x-www-form-urlencoded".(IsSet($arguments["CharSet"]) ? "; charset=".$arguments["CharSet"] : "");
                $get_body=0;
            }
        }
        if($get_body
        && (IsSet($arguments["Body"])
        || IsSet($arguments["BodyStream"])))
        {
            if(IsSet($arguments["Body"]))
            $this->request_body=$arguments["Body"];
            else
            {
                $stream=$arguments["BodyStream"];
                $this->request_body="";
                for($part=0; $part<count($stream); $part++)
                {
                    if(IsSet($stream[$part]["Data"]))
                    $this->request_body.=$stream[$part]["Data"];
                    elseif(IsSet($stream[$part]["File"]))
                    {
                        if(!($file=@fopen($stream[$part]["File"],"rb")))
                        return($this->SetPHPError("could not open upload file ".$stream[$part]["File"], $php_errormsg));
                        while(!feof($file))
                        {
                            if(GetType($block=@fread($file,$this->file_buffer_length))!="string")
                            {
                                $error=$this->SetPHPError("could not read body stream file ".$stream[$part]["File"], $php_errormsg);
                                fclose($file);
                                return($error);
                            }
                            $this->request_body.=$block;
                        }
                        fclose($file);
                    }
                    else
                    return("5 it was not specified a valid file or data body stream element at position ".$part);
                }
            }
            if(!IsSet($this->request_headers["Content-Type"]))
            $this->request_headers["Content-Type"]="application/octet-stream".(IsSet($arguments["CharSet"]) ? "; charset=".$arguments["CharSet"] : "");
        }
        if(IsSet($arguments["AuthUser"]))
        $this->request_user=$arguments["AuthUser"];
        elseif(IsSet($this->user))
        $this->request_user=$this->user;
        if(IsSet($arguments["AuthPassword"]))
        $this->request_password=$arguments["AuthPassword"];
        elseif(IsSet($this->password))
        $this->request_password=$this->password;
        if(IsSet($arguments["AuthRealm"]))
        $this->request_realm=$arguments["AuthRealm"];
        elseif(IsSet($this->realm))
        $this->request_realm=$this->realm;
        if(IsSet($arguments["AuthWorkstation"]))
        $this->request_workstation=$arguments["AuthWorkstation"];
        elseif(IsSet($this->workstation))
        $this->request_workstation=$this->workstation;
        if(strlen($this->proxy_host_name)==0
        || $connect)
        $request_uri=$this->request_uri;
        else
        {
            switch(strtolower($this->protocol))
            {
                case "http":
                    $default_port=80;
                    break;
                case "https":
                    $default_port=443;
                    break;
            }
            $request_uri=strtolower($this->protocol)."://".$this->host_name.(($this->host_port==0 || $this->host_port==$default_port) ? "" : ":".$this->host_port).$this->request_uri;
        }
        if($this->use_curl)
        {
            $version=(GetType($v=curl_version())=="array" ? (IsSet($v["version"]) ? $v["version"] : "0.0.0") : (preg_match("/^libcurl\\/([0-9]+\\.[0-9]+\\.[0-9]+)/",$v,$m) ? $m[1] : "0.0.0"));
            $curl_version=100000*intval($this->Tokenize($version,"."))+1000*intval($this->Tokenize("."))+intval($this->Tokenize(""));
            $protocol_version=($curl_version<713002 ? "1.0" : $this->protocol_version);
        }
        else
        $protocol_version=$this->protocol_version;
        $this->request=$this->request_method." ".$request_uri." HTTP/".$protocol_version;
        if($body_length
        || ($body_length=strlen($this->request_body)))
        $this->request_headers["Content-Length"]=$body_length;
        for($headers=array(),$host_set=0,Reset($this->request_headers),$header=0;$header<count($this->request_headers);Next($this->request_headers),$header++)
        {
            $header_name=Key($this->request_headers);
            $header_value=$this->request_headers[$header_name];
            if(GetType($header_value)=="array")
            {
                for(Reset($header_value),$value=0;$value<count($header_value);Next($header_value),$value++)
                $headers[]=$header_name.": ".$header_value[Key($header_value)];
            }
            else
            $headers[]=$header_name.": ".$header_value;
            if(strtolower(Key($this->request_headers))=="host")
            {
                $this->request_host=strtolower($header_value);
                $host_set=1;
            }
        }
        if(!$host_set)
        {
            $headers[]="Host: ".$this->host_name;
            $this->request_host=strtolower($this->host_name);
        }
        if(count($this->cookies))
        {
            $cookies=array();
            $this->PickCookies($cookies,0);
            if(strtolower($this->protocol)=="https")
            $this->PickCookies($cookies,1);
            if(count($cookies))
            {
                $h=count($headers);
                $headers[$h]="Cookie:";
                for(Reset($cookies),$cookie=0;$cookie<count($cookies);Next($cookies),$cookie++)
                {
                    $cookie_name=Key($cookies);
                    $headers[$h].=" ".$cookie_name."=".$cookies[$cookie_name]["value"].";";
                }
            }
        }
        $next_state = "RequestSent";
        if($this->use_curl)
        {
            if(IsSet($arguments['StreamRequest']))
            return($this->SetError("Streaming request data is not supported when using Curl"));
            if($body_length
            && strlen($this->request_body)==0)
            {
                for($request_body="",$success=1,$part=0;$part<count($post_parts);$part++)
                {
                    $request_body.=$post_parts[$part]["HEADERS"].$post_parts[$part]["DATA"];
                    if(IsSet($post_parts[$part]["FILENAME"]))
                    {
                        if(!($file=@fopen($post_parts[$part]["FILENAME"],"rb")))
                        {
                            $this->SetPHPError("could not open upload file ".$post_parts[$part]["FILENAME"], $php_errormsg);
                            $success=0;
                            break;
                        }
                        while(!feof($file))
                        {
                            if(GetType($block=@fread($file,$this->file_buffer_length))!="string")
                            {
                                $this->SetPHPError("could not read upload file", $php_errormsg);
                                $success=0;
                                break;
                            }
                            $request_body.=$block;
                        }
                        fclose($file);
                        if(!$success)
                        break;
                    }
                    $request_body.="\r\n";
                }
                $request_body.="--".$boundary."--\r\n";
            }
            else
            $request_body=$this->request_body;
            curl_setopt($this->connection,CURLOPT_HEADER,1);
            curl_setopt($this->connection,CURLOPT_RETURNTRANSFER,1);
            if($this->timeout)
            curl_setopt($this->connection,CURLOPT_TIMEOUT,$this->timeout);
            curl_setopt($this->connection,CURLOPT_SSL_VERIFYPEER,0);
            curl_setopt($this->connection,CURLOPT_SSL_VERIFYHOST,0);
            $request=$this->request."\r\n".implode("\r\n",$headers)."\r\n\r\n".$request_body;
            curl_setopt($this->connection,CURLOPT_CUSTOMREQUEST,$request);
            if($this->debug)
            $this->OutputDebug("C ".$request);
            if(!($success=(strlen($this->response=curl_exec($this->connection))!=0)))
            {
                $error=curl_error($this->connection);
                $this->SetError("Could not execute the request".(strlen($error) ? ": ".$error : ""));
            }
        }
        else
        {
            if(($success=$this->PutLine($this->request)))
            {
                for($header=0;$header<count($headers);$header++)
                {
                    if(!$success=$this->PutLine($headers[$header]))
                    break;
                }
                if($success
                && ($success=$this->PutLine("")))
                {
                    if(IsSet($arguments['StreamRequest']))
                    $next_state = "SendingRequestBody";
                    elseif($body_length)
                    {
                        if(strlen($this->request_body))
                        $success=$this->PutData($this->request_body);
                        else
                        {
                            for($part=0;$part<count($post_parts);$part++)
                            {
                                if(!($success=$this->PutData($post_parts[$part]["HEADERS"]))
                                || !($success=$this->PutData($post_parts[$part]["DATA"])))
                                break;
                                if(IsSet($post_parts[$part]["FILENAME"]))
                                {
                                    if(!($file=@fopen($post_parts[$part]["FILENAME"],"rb")))
                                    {
                                        $this->SetPHPError("could not open upload file ".$post_parts[$part]["FILENAME"], $php_errormsg);
                                        $success=0;
                                        break;
                                    }
                                    while(!feof($file))
                                    {
                                        if(GetType($block=@fread($file,$this->file_buffer_length))!="string")
                                        {
                                            $this->SetPHPError("could not read upload file", $php_errormsg);
                                            $success=0;
                                            break;
                                        }
                                        if(!($success=$this->PutData($block)))
                                        break;
                                    }
                                    fclose($file);
                                    if(!$success)
                                    break;
                                }
                                if(!($success=$this->PutLine("")))
                                break;
                            }
                            if($success)
                            $success=$this->PutLine("--".$boundary."--");
                        }
                        if($success)
                        $sucess=$this->FlushData();
                    }
                }
            }
        }
        if(!$success)
        return($this->SetError("5 could not send the HTTP request: ".$this->error));
        $this->state=$next_state;
        return("");
    }

    Function SetCookie($name, $value, $expires="" , $path="/" , $domain="" , $secure=0, $verbatim=0)
    {
        if(strlen($this->error))
        return($this->error);
        if(strlen($name)==0)
        return($this->SetError("it was not specified a valid cookie name"));
        if(strlen($path)==0
        || strcmp($path[0],"/"))
        return($this->SetError($path." is not a valid path for setting cookie ".$name));
        if($domain==""
        || !strpos($domain,".",$domain[0]=="." ? 1 : 0))
        return($this->SetError($domain." is not a valid domain for setting cookie ".$name));
        $domain=strtolower($domain);
        if(!strcmp($domain[0],"."))
        $domain=substr($domain,1);
        if(!$verbatim)
        {
            $name=$this->CookieEncode($name,1);
            $value=$this->CookieEncode($value,0);
        }
        $secure=intval($secure);
        $this->cookies[$secure][$domain][$path][$name]=array(
			"name"=>$name,
			"value"=>$value,
			"domain"=>$domain,
			"path"=>$path,
			"expires"=>$expires,
			"secure"=>$secure
        );
        return("");
    }

    Function SendRequestBody($data, $end_of_data)
    {
        if(strlen($this->error))
        return($this->error);
        switch($this->state)
        {
            case "Disconnected":
                return($this->SetError("1 connection was not yet established"));
            case "Connected":
            case "ConnectedToProxy":
                return($this->SetError("2 request was not sent"));
            case "SendingRequestBody":
                break;
            case "RequestSent":
                return($this->SetError("3 request body was already sent"));
            default:
                return($this->SetError("4 can not send the request body in the current connection state"));
        }
        $length = strlen($data);
        if($length)
        {
            $size = dechex($length)."\r\n";
            if(!$this->PutData($size)
            || !$this->PutData($data))
            return($this->error);
        }
        if($end_of_data)
        {
            $size = "0\r\n";
            if(!$this->PutData($size))
            return($this->error);
            $this->state = "RequestSent";
        }
        return("");
    }

    Function ReadReplyHeadersResponse(&$headers)
    {
        $headers=array();
        if(strlen($this->error))
        return($this->error);
        switch($this->state)
        {
            case "Disconnected":
                return($this->SetError("1 connection was not yet established"));
            case "Connected":
                return($this->SetError("2 request was not sent"));
            case "ConnectedToProxy":
                return($this->SetError("2 connection from the remote server from the proxy was not yet established"));
            case "SendingRequestBody":
                return($this->SetError("4 request body data was not completely sent"));
            case "ConnectSent":
                $connect = 1;
                break;
            case "RequestSent":
                $connect = 0;
                break;
            default:
                return($this->SetError("3 can not get request headers in the current connection state"));
        }
        $this->content_length=$this->read_length=$this->read_response=$this->remaining_chunk=0;
        $this->content_length_set=$this->chunked=$this->last_chunk_read=$chunked=0;
        $this->connection_close=0;
        for($this->response_status="";;)
        {
            $line=$this->GetLine();
            if(GetType($line)!="string")
            return($this->SetError("4 could not read request reply: ".$this->error));
            if(strlen($this->response_status)==0)
            {
                if(!preg_match($match="/^http\\/[0-9]+\\.[0-9]+[ \t]+([0-9]+)[ \t]*(.*)\$/i",$line,$matches))
                return($this->SetError("3 it was received an unexpected HTTP response status"));
                $this->response_status=$matches[1];
                $this->response_message=$matches[2];
            }
            if($line=="")
            {
                if(strlen($this->response_status)==0)
                return($this->SetError("3 it was not received HTTP response status"));
                $this->state=($connect ? "GotConnectHeaders" : "GotReplyHeaders");
                break;
            }
            $header_name=strtolower($this->Tokenize($line,":"));
            $header_value=Trim(Chop($this->Tokenize("\r\n")));
            if(IsSet($headers[$header_name]))
            {
                if(GetType($headers[$header_name])=="string")
                $headers[$header_name]=array($headers[$header_name]);
                $headers[$header_name][]=$header_value;
            }
            else
            $headers[$header_name]=$header_value;
            if(!$connect)
            {
                switch($header_name)
                {
                    case "content-length":
                        $this->content_length=intval($headers[$header_name]);
                        $this->content_length_set=1;
                        break;
                    case "transfer-encoding":
                        $encoding=$this->Tokenize($header_value,"; \t");
                        if(!$this->use_curl
                        && !strcmp($encoding,"chunked"))
                        $chunked=1;
                        break;
                    case "set-cookie":
                        if($this->support_cookies)
                        {
                            if(GetType($headers[$header_name])=="array")
                            $cookie_headers=$headers[$header_name];
                            else
                            $cookie_headers=array($headers[$header_name]);
                            for($cookie=0;$cookie<count($cookie_headers);$cookie++)
                            {
                                $cookie_name=trim($this->Tokenize($cookie_headers[$cookie],"="));
                                $cookie_value=$this->Tokenize(";");
                                $domain=$this->request_host;
                                $path="/";
                                $expires="";
                                $secure=0;
                                while(($name=trim(UrlDecode($this->Tokenize("="))))!="")
                                {
                                    $value=UrlDecode($this->Tokenize(";"));
                                    switch($name)
                                    {
                                        case "domain":
                                            $domain=$value;
                                            break;
                                        case "path":
                                            $path=$value;
                                            break;
                                        case "expires":
                                            if(preg_match("/^((Mon|Monday|Tue|Tuesday|Wed|Wednesday|Thu|Thursday|Fri|Friday|Sat|Saturday|Sun|Sunday), )?([0-9]{2})\\-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\\-([0-9]{2,4}) ([0-9]{2})\\:([0-9]{2})\\:([0-9]{2}) GMT\$/",$value,$matches))
                                            {
                                                $year=intval($matches[5]);
                                                if($year<1900)
                                                $year+=($year<70 ? 2000 : 1900);
                                                $expires="$year-".$this->months[$matches[4]]."-".$matches[3]." ".$matches[6].":".$matches[7].":".$matches[8];
                                            }
                                            break;
                                        case "secure":
                                            $secure=1;
                                            break;
                                    }
                                }
                                if(strlen($this->SetCookie($cookie_name, $cookie_value, $expires, $path , $domain, $secure, 1)))
                                $this->error="";
                            }
                        }
                        break;
                    case "connection":
                        $this->connection_close=!strcmp(strtolower($header_value),"close");
                        break;
                }
            }
        }
        $this->chunked=$chunked;
        if($this->content_length_set)
        $this->connection_close=0;
        return("");
    }

    Function Redirect(&$headers)
    {
        if($this->follow_redirect)
        {
            if(!IsSet($headers["location"])
            || (GetType($headers["location"])!="array"
            && strlen($location=$headers["location"])==0)
            || (GetType($headers["location"])=="array"
            && strlen($location=$headers["location"][0])==0))
            return($this->SetError("3 it was received a redirect without location URL"));
            if(strcmp($location[0],"/"))
            {
                $location_arguments=parse_url($location);
                if(!IsSet($location_arguments["scheme"]))
                $location=((GetType($end=strrpos($this->request_uri,"/"))=="integer" && $end>1) ? substr($this->request_uri,0,$end) : "")."/".$location;
            }
            if(!strcmp($location[0],"/"))
            $location=$this->protocol."://".$this->host_name.($this->host_port ? ":".$this->host_port : "").$location;
            $error=$this->GetRequestArguments($location,$arguments);
            if(strlen($error))
            return($this->SetError("could not process redirect url: ".$error));
            $arguments["RequestMethod"]="GET";
            if(strlen($error=$this->Close())==0
            && strlen($error=$this->Open($arguments))==0
            && strlen($error=$this->SendRequest($arguments))==0)
            {
                $this->redirection_level++;
                if($this->redirection_level>$this->redirection_limit)
                $error="it was exceeded the limit of request redirections";
                else
                $error=$this->ReadReplyHeaders($headers);
                $this->redirection_level--;
            }
            if(strlen($error))
            return($this->SetError($error));
        }
        return("");
    }

    Function Authenticate(&$headers, $proxy, &$proxy_authorization, &$user, &$password, &$realm, &$workstation)
    {
        if($proxy)
        {
            $authenticate_header="proxy-authenticate";
            $authorization_header="Proxy-Authorization";
            $authenticate_status="407";
            $authentication_mechanism=$this->proxy_authentication_mechanism;
        }
        else
        {
            $authenticate_header="www-authenticate";
            $authorization_header="Authorization";
            $authenticate_status="401";
            $authentication_mechanism=$this->authentication_mechanism;
        }
        if(IsSet($headers[$authenticate_header]))
        {
            if(function_exists("class_exists")
            && !class_exists("sasl_client_class"))
            return($this->SetError("the SASL client class needs to be loaded to be able to authenticate".($proxy ? " with the proxy server" : "")." and access this site"));
            if(GetType($headers[$authenticate_header])=="array")
            $authenticate=$headers[$authenticate_header];
            else
            $authenticate=array($headers[$authenticate_header]);
            for($response="", $mechanisms=array(),$m=0;$m<count($authenticate);$m++)
            {
                $mechanism=$this->Tokenize($authenticate[$m]," ");
                $response=$this->Tokenize("");
                if(strlen($authentication_mechanism))
                {
                    if(!strcmp($authentication_mechanism,$mechanism))
                    {
                        $mechanisms[]=$mechanism;
                        break;
                    }
                }
                else
                $mechanisms[]=$mechanism;
            }
            $sasl=new sasl_client_class;
            if(IsSet($user))
            $sasl->SetCredential("user",$user);
            if(IsSet($password))
            $sasl->SetCredential("password",$password);
            if(IsSet($realm))
            $sasl->SetCredential("realm",$realm);
            if(IsSet($workstation))
            $sasl->SetCredential("workstation",$workstation);
            $sasl->SetCredential("uri",$this->request_uri);
            $sasl->SetCredential("method",$this->request_method);
            $sasl->SetCredential("session",$this->session);
            do
            {
                $status=$sasl->Start($mechanisms,$message,$interactions);
            }
            while($status==SASL_INTERACT);
            switch($status)
            {
                case SASL_CONTINUE:
                    break;
                case SASL_NOMECH:
                    return($this->SetError(($proxy ? "proxy " : "")."authentication error: ".(strlen($authentication_mechanism) ? "authentication mechanism ".$authentication_mechanism." may not be used: " : "").$sasl->error));
                default:
                    return($this->SetError("Could not start the SASL ".($proxy ? "proxy " : "")."authentication client: ".$sasl->error));
            }
            if($proxy >= 0)
            {
                for(;;)
                {
                    if(strlen($error=$this->ReadReplyBody($body,$this->file_buffer_length)))
                    return($error);
                    if(strlen($body)==0)
                    break;
                }
            }
            $authorization_value=$sasl->mechanism.(IsSet($message) ? " ".($sasl->encode_response ? base64_encode($message) : $message) : "");
            $request_arguments=$this->request_arguments;
            $arguments=$request_arguments;
            $arguments["Headers"][$authorization_header]=$authorization_value;
            if(!$proxy
            && strlen($proxy_authorization))
            $arguments["Headers"]["Proxy-Authorization"]=$proxy_authorization;
            if(strlen($error=$this->Close())
            || strlen($error=$this->Open($arguments)))
            return($this->SetError($error));
            $authenticated=0;
            if(IsSet($message))
            {
                if($proxy < 0)
                {
                    if(strlen($error=$this->ConnectFromProxy($arguments, $headers)))
                    return($this->SetError($error));
                }
                else
                {
                    if(strlen($error=$this->SendRequest($arguments))
                    || strlen($error=$this->ReadReplyHeadersResponse($headers)))
                    return($this->SetError($error));
                }
                if(!IsSet($headers[$authenticate_header]))
                $authenticate=array();
                elseif(GetType($headers[$authenticate_header])=="array")
                $authenticate=$headers[$authenticate_header];
                else
                $authenticate=array($headers[$authenticate_header]);
                for($mechanism=0;$mechanism<count($authenticate);$mechanism++)
                {
                    if(!strcmp($this->Tokenize($authenticate[$mechanism]," "),$sasl->mechanism))
                    {
                        $response=$this->Tokenize("");
                        break;
                    }
                }
                switch($this->response_status)
                {
                    case $authenticate_status:
                        break;
                    case "301":
                    case "302":
                    case "303":
                    case "307":
                        if($proxy >= 0)
                        return($this->Redirect($headers));
                    default:
                        if(intval($this->response_status/100)==2)
                        {
                            if($proxy)
                            $proxy_authorization=$authorization_value;
                            $authenticated=1;
                            break;
                        }
                        if($proxy
                        && !strcmp($this->response_status,"401"))
                        {
                            $proxy_authorization=$authorization_value;
                            $authenticated=1;
                            break;
                        }
                        return($this->SetError(($proxy ? "proxy " : "")."authentication error: ".$this->response_status." ".$this->response_message));
                }
            }
            for(;!$authenticated;)
            {
                do
                {
                    $status=$sasl->Step($response,$message,$interactions);
                }
                while($status==SASL_INTERACT);
                switch($status)
                {
                    case SASL_CONTINUE:
                        $authorization_value=$sasl->mechanism.(IsSet($message) ? " ".($sasl->encode_response ? base64_encode($message) : $message) : "");
                        $arguments=$request_arguments;
                        $arguments["Headers"][$authorization_header]=$authorization_value;
                        if(!$proxy
                        && strlen($proxy_authorization))
                        $arguments["Headers"]["Proxy-Authorization"]=$proxy_authorization;
                        if($proxy < 0)
                        {
                            if(strlen($error=$this->ConnectFromProxy($arguments, $headers)))
                            return($this->SetError($error));
                        }
                        else
                        {
                            if(strlen($error=$this->SendRequest($arguments))
                            || strlen($error=$this->ReadReplyHeadersResponse($headers)))
                            return($this->SetError($error));
                        }
                        switch($this->response_status)
                        {
                            case $authenticate_status:
                                if(GetType($headers[$authenticate_header])=="array")
                                $authenticate=$headers[$authenticate_header];
                                else
                                $authenticate=array($headers[$authenticate_header]);
                                for($response="",$mechanism=0;$mechanism<count($authenticate);$mechanism++)
                                {
                                    if(!strcmp($this->Tokenize($authenticate[$mechanism]," "),$sasl->mechanism))
                                    {
                                        $response=$this->Tokenize("");
                                        break;
                                    }
                                }
                                if($proxy >= 0)
                                {
                                    for(;;)
                                    {
                                        if(strlen($error=$this->ReadReplyBody($body,$this->file_buffer_length)))
                                        return($error);
                                        if(strlen($body)==0)
                                        break;
                                    }
                                }
                                $this->state="Connected";
                                break;
                            case "301":
                            case "302":
                            case "303":
                            case "307":
                                if($proxy >= 0)
                                return($this->Redirect($headers));
                            default:
                                if(intval($this->response_status/100)==2)
                                {
                                    if($proxy)
                                    $proxy_authorization=$authorization_value;
                                    $authenticated=1;
                                    break;
                                }
                                if($proxy
                                && !strcmp($this->response_status,"401"))
                                {
                                    $proxy_authorization=$authorization_value;
                                    $authenticated=1;
                                    break;
                                }
                                return($this->SetError(($proxy ? "proxy " : "")."authentication error: ".$this->response_status." ".$this->response_message));
                        }
                        break;
                    default:
                        return($this->SetError("Could not process the SASL ".($proxy ? "proxy " : "")."authentication step: ".$sasl->error));
                }
            }
        }
        return("");
    }

    Function ReadReplyHeaders(&$headers)
    {
        if(strlen($error=$this->ReadReplyHeadersResponse($headers)))
        return($error);
        $proxy_authorization="";
        while(!strcmp($this->response_status, "100"))
        {
            $this->state="RequestSent";
            if(strlen($error=$this->ReadReplyHeadersResponse($headers)))
            return($error);
        }
        switch($this->response_status)
        {
            case "301":
            case "302":
            case "303":
            case "307":
                if(strlen($error=$this->Redirect($headers)))
                return($error);
                break;
            case "407":
                if(strlen($error=$this->Authenticate($headers, 1, $proxy_authorization, $this->proxy_request_user, $this->proxy_request_password, $this->proxy_request_realm, $this->proxy_request_workstation)))
                return($error);
                if(strcmp($this->response_status,"401"))
                return("");
            case "401":
                return($this->Authenticate($headers, 0, $proxy_authorization, $this->request_user, $this->request_password, $this->request_realm, $this->request_workstation));
        }
        return("");
    }

    Function ReadReplyBody(&$body,$length)
    {
        $body="";
        if(strlen($this->error))
        return($this->error);
        switch($this->state)
        {
            case "Disconnected":
                return($this->SetError("1 connection was not yet established"));
            case "Connected":
            case "ConnectedToProxy":
                return($this->SetError("2 request was not sent"));
            case "RequestSent":
                if(($error=$this->ReadReplyHeaders($headers))!="")
                return($error);
                break;
            case "GotReplyHeaders":
                break;
            default:
                return($this->SetError("3 can not get request headers in the current connection state"));
        }
        if($this->content_length_set)
        $length=min($this->content_length-$this->read_length,$length);
        if($length>0
        && !$this->EndOfInput()
        && ($body=$this->ReadBytes($length))=="")
        {
            if(strlen($this->error))
            return($this->SetError("4 could not get the request reply body: ".$this->error));
        }
        $this->read_length+=strlen($body);
        return("");
    }

    Function SaveCookies(&$cookies, $domain='', $secure_only=0, $persistent_only=0)
    {
        $now=gmdate("Y-m-d H-i-s");
        $cookies=array();
        for($secure_cookies=0,Reset($this->cookies);$secure_cookies<count($this->cookies);Next($this->cookies),$secure_cookies++)
        {
            $secure=Key($this->cookies);
            if(!$secure_only
            || $secure)
            {
                for($cookie_domain=0,Reset($this->cookies[$secure]);$cookie_domain<count($this->cookies[$secure]);Next($this->cookies[$secure]),$cookie_domain++)
                {
                    $domain_pattern=Key($this->cookies[$secure]);
                    $match=strlen($domain)-strlen($domain_pattern);
                    if(strlen($domain)==0
                    || ($match>=0
                    && !strcmp($domain_pattern,substr($domain,$match))
                    && ($match==0
                    || $domain_pattern[0]=="."
                    || $domain[$match-1]==".")))
                    {
                        for(Reset($this->cookies[$secure][$domain_pattern]),$path_part=0;$path_part<count($this->cookies[$secure][$domain_pattern]);Next($this->cookies[$secure][$domain_pattern]),$path_part++)
                        {
                            $path=Key($this->cookies[$secure][$domain_pattern]);
                            for(Reset($this->cookies[$secure][$domain_pattern][$path]),$cookie=0;$cookie<count($this->cookies[$secure][$domain_pattern][$path]);Next($this->cookies[$secure][$domain_pattern][$path]),$cookie++)
                            {
                                $cookie_name=Key($this->cookies[$secure][$domain_pattern][$path]);
                                $expires=$this->cookies[$secure][$domain_pattern][$path][$cookie_name]["expires"];
                                if((!$persistent_only
                                && strlen($expires)==0)
                                || (strlen($expires)
                                && strcmp($now,$expires)<0))
                                $cookies[$secure][$domain_pattern][$path][$cookie_name]=$this->cookies[$secure][$domain_pattern][$path][$cookie_name];
                            }
                        }
                    }
                }
            }
        }
    }

    Function SavePersistentCookies(&$cookies, $domain='', $secure_only=0)
    {
        $this->SaveCookies($cookies, $domain, $secure_only, 1);
    }

    Function GetPersistentCookies(&$cookies, $domain='', $secure_only=0)
    {
        $this->SavePersistentCookies($cookies, $domain, $secure_only);
    }

    Function RestoreCookies($cookies, $clear=1)
    {
        $new_cookies=($clear ? array() : $this->cookies);
        for($secure_cookies=0, Reset($cookies); $secure_cookies<count($cookies); Next($cookies), $secure_cookies++)
        {
            $secure=Key($cookies);
            if(GetType($secure)!="integer")
            return($this->SetError("invalid cookie secure value type (".serialize($secure).")"));
            for($cookie_domain=0,Reset($cookies[$secure]);$cookie_domain<count($cookies[$secure]);Next($cookies[$secure]),$cookie_domain++)
            {
                $domain_pattern=Key($cookies[$secure]);
                if(GetType($domain_pattern)!="string")
                return($this->SetError("invalid cookie domain value type (".serialize($domain_pattern).")"));
                for(Reset($cookies[$secure][$domain_pattern]),$path_part=0;$path_part<count($cookies[$secure][$domain_pattern]);Next($cookies[$secure][$domain_pattern]),$path_part++)
                {
                    $path=Key($cookies[$secure][$domain_pattern]);
                    if(GetType($path)!="string"
                    || strcmp(substr($path, 0, 1), "/"))
                    return($this->SetError("invalid cookie path value type (".serialize($path).")"));
                    for(Reset($cookies[$secure][$domain_pattern][$path]),$cookie=0;$cookie<count($cookies[$secure][$domain_pattern][$path]);Next($cookies[$secure][$domain_pattern][$path]),$cookie++)
                    {
                        $cookie_name=Key($cookies[$secure][$domain_pattern][$path]);
                        $expires=$cookies[$secure][$domain_pattern][$path][$cookie_name]["expires"];
                        $value=$cookies[$secure][$domain_pattern][$path][$cookie_name]["value"];
                        if(GetType($expires)!="string"
                        || (strlen($expires)
                        && !preg_match("/^[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\$/", $expires)))
                        return($this->SetError("invalid cookie expiry value type (".serialize($expires).")"));
                        $new_cookies[$secure][$domain_pattern][$path][$cookie_name]=array(
							"name"=>$cookie_name,
							"value"=>$value,
							"domain"=>$domain_pattern,
							"path"=>$path,
							"expires"=>$expires,
							"secure"=>$secure
                        );
                    }
                }
            }
        }
        $this->cookies=$new_cookies;
        return("");
    }
};

?>